* Always use expansion logic if the layout's size is fixed
* Ensure e.g. expansion changes happen even if no hierarchy or
measurement changes (#10161)
* Separate the calculation of expand ratios from the adjustment for the
sizes of children without expansion
* Ensure there are element resize listeners for all elements that should
be measured (#10488)
* Postpone calculations if there are elements that have not yet been
measured
* Use measurements for fixing the height under more circumstances
* Only update based on hierarchy & state if something might have changed